Blend door actuator locations? Not working correctly?

Okay, from your description you replaced the blend door actuator and it started doing the self test, now that blend door actuator is bad again and it is now cycling the test. Those are both likely due to the system not being calibrated to the new actuator when it was installed. That process requires a scan tool to erase the stored information and the system then learns the information from the replacement actuator. It runs the test because it is getting the wrong signals from the replacement part. With it clicking now I think it will need to be replaced again as the clicks are commonly caused by the plastic gearing inside failing.

Here is a guide to help you step by step with instructions in the diagrams below to show you how on your car.

https://www.2carpros.com/articles/replace-blend-door-motor

Once it is replaced and a scan tool used to calibrate it, and erase any stored trouble codes from the HVAC module all of the clicking and lights should cease. Unfortunately there is no way to do the calibration on that system without a scan tool. Some others can be done without one but not that system. Check out the diagrams (Below). Let us know what happens and please upload pictures or videos of the problem.

A clicking by the actuator is due to the plastic gears slipping. This is typical of one that has failed. The calibration is due to it needing to find its location so I would suggest putting the temp to full hot or full cold with the new actuator plugged in but not installed yet. This will cause the actuator to go to its full travel. Then manually hold the door in this position when you install the actuator and they will be aligned. Otherwise you may have them out of sync and it can cause them to wear out.

Otherwise you will need to have the calibration process run with a scan tool. The process that you are talking about doesn't actually run the calibration. It is just a reset process that people have had success in getting the light to stop flashing due to it running a calibration during the reset process. However, it does this every time you start the vehicle which is what the flashing button means. So that means we need replace the clicking actuator and then install as described above and when it runs the calibration it should learn the position and stop flashing.

https://www.2carpros.com/articles/replace-blend-door-motor

Let us know what questions you have. Thanks

Good afternoon,

Does this happen with the ignition off? There should be no power to the actuators without the key on. There are three. A blend door, mode door and re-circulation motor. Check out the diagrams (Below). Let us know what happens and please upload pictures or videos of the problem.

Can you check under the dash and see if you can feel it to see if it is an actuator?

Do all the controls work correctly?

Roy

The blend door is under the dash. You will have to disconnect the negative side of the battery before you start. Then remove any silencers or covers. The dash will not have to be removed. The blend door actuator is located on the left side of the HVAC unit under the dash.

Got it.

Can you feel which actuator is making the noise?

Roy

Got it.

Below is the procedure with a picture attached for the actuator.

Roy

1. Disconnect and isolate the negative battery cable. See: Battery > Service and Repair
2. Remove the driver side knee blocker. See: Dashboard / Instrument Panel > Service and Repair
3. Remove the two screws (1) that secure the blend door actuator (3) to the driver side of the HVAC air distribution housing (4) and remove the actuator from the housing. See: Air Door Actuator / Motor, HVAC > Service and Repair
4. Disengage the red locking tab and disconnect the wire harness connector (2) from the blend door actuator and remove the actuator from the vehicle.

Yes, they are.

One step at a time.

Roy

You are welcome.

Always glad to help.

Roy

A/C TEMPERATURE DIFFERENTIAL (STRATIFICATION) BETWEEN LEFT AND RIGHT FRONT PANEL OUTLETS TECHNICAL SERVICE BULLETIN Reference Number(s): 24-007-02,  Date of Issue:  August 5, 2002 Related Ref Number(s): 24-007-02 ARTICLE BEGINNING SUBJECT A/C Temperature Differential (Stratification) Between Left and Right Front Panel Outlets OVERVIEW This bulletin involves diagnosing A/C temperature difference (stratification) between the left and right front panel outlets. MODELS 2001-2002 (RS) Town & Country/Caravan/Voyager 2001-2002 (RG) Chrysler Voyager (International Markets) SYMPTOM/CONDITION More than 12 ° F. Warmer outlet air temperature on the left front panel outlet as compared to the right front panel outlet when the HVAC controls are set to max cold. DIAGNOSIS Set the A/C controls so that the compressor is engaged, the air within the vehicle is being recirculated, the output air is being directed through the panel outlets, the temperature control is in the full cool position, and the front and rear (if equipped with rear A/C) blower motor(s) are operating at their highest speed. Use a temperature probe to measure the front left and right panel outlet temperatures. If the difference between the two panel outlets is greater than 12 °F, perform the diagnostic procedure below.
CHRYSLER: 2001-2002 (RS) Town & Country/Voyager; (RG) Chrysler Voyager (International Markets) DODGE: 2001-2002 (RS) Caravan GROUP: 24 - Heating & A/C NOTE: THIS BULLETIN APPLIES TO RS/RG VEHICLES EQUIPPED WITH DUAL ZONE MANUAL (HAD), 3 ZONE MANUAL (HAG), OR ATC (HAH) CLIMATE CONTROL SYSTEMS
I will send this to your email too.
CALIBRATION TEST Description Heater, Ventilation and Air Conditioning (HVAC) control module must be recalibrated each time a door actuator is replaced or when HVAC control module is replaced. It is necessary for HVAC control module to learn feedback voltage values for each door stop position for all doors in front HVAC unit housing, and rear HVAC unit housing (if equipped). If any door actuator is out of calibration, HVAC system will not perform a maximum efficiency. 1. Turn ignition switch to ON position. Simultaneously depress and hold power (PWR) button and recirculation button of front control panel for 5 seconds, then release. LED lights of front control panel will begin to flash when calibration procedure has begun. Calibration procedure should take less than 3 minutes to complete. 2. When front control panel LED lights stop flashing, this indicates calibration procedure has been successfully completed. If LED lights remain flashing for longer than 3 minutes, HVAC control module has detected a fault with actuator door calibration. LEDs will continue to flash until even after ignition switch has been cycled off and on, until a successful calibration test is completed, or until vehicle has been driven about 3 miles. For diagnostic procedures for calibration test failure, see READING DIAGNOSTIC TROUBLE CODES under SELF- DIAGNOSTIC SYSTEM. PROGRAMMING RECIRCULATION PROGRAMMING Description Recirculation function is controlled by Heater, Ventilation and Air Conditioning (HVAC) control module and automatically returns to outside air mode as default setting, after an ignition cycle. This is done to prevent odors from building up in HVAC housing. It is recommended that recirculation mode be used as little as possible in humid climates to prevent odors from forming inside vehicle cabin. For hot/dry climates, people allergic to pollen or other airborne particles, or for drivers that find it necessary to frequently use recirculation mode, HVAC control module can be programmed to default to recirculation mode at end of an ignition cycle by performing the following procedure: 1. Start engine. Turn front blower motor switch to any position except off. Set mode control selector to face position. 2. Turn ignition switch to OFF position. Depress and hold recirculation button. Start engine, and continue to hold recirculation button and observe recirculation button LED indicator light. The recirculation button LED indicator light will flash repeatedly. When recirculation button LED indicator light stops flashing, release recirculation button. Programming is complete. 3. Turn engine off. Wait 10 seconds, then restart engine. Verify recirculation mode default setting is properly programmed. Repeat this procedure to select between recirculation mode default and outside air mode default settings.
HEATER-A/C CONTROL CALIBRATION The heater-A/C control module must be recalibrated each time an actuator motor or the control module is replaced. If the vehicle is so equipped, the calibration procedure also includes rear HVAC positions for each actuator motor. 1. Turn the ignition switch to the On position. Simultaneously depress and hold the Power and Recirculation buttons on the heater-A/C control for at least five seconds. 2. The manual heater-A/C control power Light Emitting Diode (LED) and Recirculation LED, or the Automatic Temperature Control (ATC) heater-A/C control Delay and Recirculation graphics will begin to flash when the calibration procedure has begun. 3. The calibration procedure should take less than two minutes to complete for the manual heater- A/C control, and less than twenty seconds for the ATC heater-A/C control. When the LEDs or graphics stop flashing, the calibration procedure is complete. 4. If the LEDs or graphics continue to flash beyond the normal three minute (manual) or twenty second (ATC) calibration time, it indicates that the heater-A/C control has detected a failure and a Diagnostic Trouble Code (DTC) has been set. 5. Use a DRBIII Â scan tool to perform further diagnosis. Refer to the appropriate diagnostic information. The LEDs or graphics will continue to flash even after the ignition switch is cycled Off and On, until a successful calibration is completed or until the vehicle has been driven about 8 miles.